Yarn-mercerizing machine.



P. HAHN. YARN MERGERIZING MACHINE.

APPLICATION FILED OCT. 2, 1912.

1,087,442, Patented Feb. 17, 1914.

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P. HAHN. I YARN MERCERIZING MACHINE.

APPLICATION FILED 001'. 2, 1912.

1,087,442. Patented Feb. 17, 1914.

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YARN MERCERIZIN G MACHINE.

APPLICATION FILED OCT. 2, 1912.

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P. HAHN.

YARN MERGERIZING MACHINE.

APPLICATION FILED OUT. 2, 1912.

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rmrrnn STATES AT nnron.

PAUL HAHN, 0F NIEDERLAHNSTEIN-ON-THE-RHINE, GERMANY.

rAmr-mnnonmzme Macrame.

Specification of Letters Patent.

' Patented Feb. 17, 1914.

Application filed October 2, 1912. Serial No. 723,490.

' yarn on the several pairs of rollers being each -impregnated, squeezed and rinsed in difierent positions. Such machines are very complicated, require a considerable driving power and cause great working expenses, while frequently their only advantage consists in that a single workman suflices for attending. They present the chief disadvantage, that they are difficult to inspect and to lubricate. The lye dropping from the hanks moving in the air above the baths and flowing into the bearings and other delicate machine parts attacks the metals of these parts. The lubricating oil flowing off from the machine parts is apt to soil not only the machine, but also the hanks.

My invention relates to an improved yarn mercerizing machine, in which the said disadvantages are avoided. On both sides of the improved machine several, at least two for each side, pairs of rollers are disposed in parallel vertical planes, which rollers are simply rotated about their own axes and'are periodically moved together and again apart, while several wheeled boxes (one for each pair of rollers) are provided, which are each divided by a partition into two compartments and can be raised and lowered, so that in the upper extreme position. of each box either compartment incloses the pair of rollers and the hank of yarn on them and is ready to be filled with lye or rinsing liquid. Means are provided for periodically raising and lowering the several boxes at different times and other means are provided for horizontally shifting at diflerent times the several wheeled boxes in their lower extreme position so as to change from one compartment to the other one and vice versa.

The improved machine is so arranged, that the hanks of yarn in the same vertical plane on both sides of the machine are simultaneously treated in a like manner, but

the hanks in the several parallel vertical planes are difierently treated and the several wheeled boxes are operatedat different times, so as to reduce the required driving power of the machine to a minimum and to facilitate the inspection and work of the operator.

I will now proceed to describe my inven I tion with reference to the accompanying drawings, in which Y Figure 1 is a side elevation of a yarn mercerizing machine embodying my improvements, Fig. 2 is a front view of the same, when looked at from the left in Fig. 1, Fig. 3 is a diagram,which will be referred to later, Fig. 4 is a vertical longitudinal section on an enlarged scale through one box on theline ow in Fig. 5, Fig. 5 is a horizontal section through the same on the line a0g in Flg. 4, and Fig. 6 is a detail, which will be referred to later on.

Similar characters of reference refer to similar parts throughout the several views. In a frame 1 of any approved construction (Figs. 1 and 2) two parallel thick shafts 2, 3 are mounted to turn and project toboth sides from the frame. In suitable movable bearings 73, 73 vertically guided in the frame 1 above the two shafts 2, 3 two similar thick shafts 2 3 are mounted to turn and prevented in any known manner (not shown) from .endwise motion. A rod 66 secured in the frame 1 above carries loose on it two two-armed levers 67, 68, the short arms 68 of which arepivotally'connected by means of links 70, 70 with two horizontal balancing levers 71. The said movable bearings 73, 73 are preferably connected together by means of tubes 7 3 (Fig. 4) and are suspended by means of links 72, 72 from the free ends of the two balancing levers 71. A main shaft 21 (Fig. 2) is mounted to turn in the frame 1 and has fastened on it two parallel cam disks 61, 61, of which only one 61 is indicated by dotted lines in Fig.2 for the sake of clearness. Two pairs of. parallel levers 64, 64 are mounted to rock with their pivots 63 in suitable parts of the frame-1 and are at their free ends pivotallyconnected by means of pairs of rods 65, 65 with the long arms 67, 67 at a point between their fulcrum 66 and their free ends. Intermediate their ends the two pairsaof levers 64, 64 carry rollers 62, 62 which areadapted to roll on the cams of the two cam disks '61, 61 but are normally at a small distance above the two cam disks, as is shown in Fig. 2. Detachable weights 69 (omitted from Fig. 1 for the sake of clearness) are suspended from the free ends of the two long arms 67, 67 and serve for pressing upward the two upper shafts 2 3, the bearings 73, 73 and the parts 72, 72, 71, 71, 70, 70, 68. It will be understood that the cams of the two cam disks 61, 61 are adapted to raise and lower the two upper shafts 2 3 independently of one another, whereby of course the distance between the upper shafts 2 3 and the lower shafts 2, 3 is varied.

The outer parts of the four shafts 2, 2 3, 3 serve as rollers for stretching the hanks of yarn 140 laid around them. For rotating these rollers in both directions a driving shaft 32 is mounted to turn in suitable parts of the frame 1 and carries a fast pulley 43, two loose pulleys 45, 46 on both sides of the same and a gear wheel 31, which meshes with another gear wheel 30 keyed upon a shaft 28 that turns in suitable hearings on the frame 1 and carries two small bevel wheels 29, 29*. Fastened in the frame 1 are two parallel pins 25, on each of which a large bevel wheel 27 and a pinion 26 rigidly connected together turn. The large bevel wheels 27, 27 mesh with the two small bevel wheels 29, 29 above mentioned and the two pinions 26, 26 with two gear wheels 24, 24 fastened on the two lower shafts 2, '3. For reversing the direction of the rotation of the rollers 2, 2 3, 3 two belt forks 41 and 42 are mounted to simultaneously move on two parallel guides 44, 44 fastened in the frame and are pivotally connected by means of links 35 of different lengths with two parallel arms 35 which are fastened on a shaft 33 that rocks in the frame. 41 engages with a pin in the forked end of the cranked upper arm 34 (Fig. 2) of a twoarmed lever 34, 40 rocking on the frame. Fastened on the main shaft 21 is a cam disk 39, the cams of which are adapted to rock the lower arm 40 by means of a roller 38 and thus to simultaneously reciprocate the two belt forks 41, 42 by means of the upper arm 34 and the parts 35 35, 33 35.

A shaft 47 parallel to 21 is mounted to turn in the frame 1 and carries loose on it a tube 60 rigidly connected with a pinion 54, while a fast pulley 48 and a loose pulley 49 are placed on the tube 60. The driving belt can be shifted from one pulley 48 to the other 49 and vice versa by means of a belt fork 52 movable on a guide 51 and pivotally connected with a hand lever 53 rocking at 50. The pinion 54 meshes with a large gear wheel 55 loose on the shaft 21 and rigidly connected with a pinion 56, which meshes with another large gear wheel 57 fastened on a tube 60 loose on the shaft 47. The gear wheel 57 is rigidly connected with a pinion 58, that meshes with a large gear The belt fork wheel 59 fast on' the main shaft 21. It will fast pulleys 43 and 48 to be driven at about the same speed, the main shaft 21 with the two cam disks 61, 61 will turn very slowly.

For each pair of rollers 2, 2 or 3, 3 a wheel box 4 or 5 respectively is provided, which is divided by a partition 6 (Fig. 3) into two compartments. These, compartments are open on the inner side of the box 4 or 5 which is provided with two openings 200 and 201 (Fig. 5) extending from the upper edge to a point just beneath the lower roller 2 or 3 for the upper extreme position of the box (see 4 in Fig. 1). Above the bottom of each compartment a squeezing roller 23 covered with india rubber or the like is be now obvious, that when assuming both v mounted. to turn in the walls of the box,

which roller 23 is adapted to be pressed from below against the lower roller 2 or 3.

Either opening 200 or 201 is adapted to be closed with a slide 205, which tightly fits between vertical guides 4 and 4 or between 4 and 4 in Fig. 5 and is rigidly connected with the opposite wall of the frame 1 by means of two parallel studs 206, 206 (Fig. 5). The box 4 or 5 is pressed against the slide 205 by means of two loose strips 204 and 204 and helical springs 203, 203 bearing from the other side on the slide 205. The slide 205 is provided with a stufiing box 212, through which the lower roller 2 or 3 passes. The upper part of the slide 205 is slotted at 207 to permit the roller 2 or 3 to pass through. Theupper roller 2 or 3 passes through a stufling-box 209 in a second slide 208, which is adapted to close the opening 207 of the first slide 205 and to slide on the outside of the same. The slide 208 is pressed against the slide 205 by means of leaf springs 211, the tension of which can be regulated by means of pressing nuts on screws 210 fastened in a flange 73 of the movable bearing 73. The upper screws 210 (not the lower ones) may engage in holes in the slide 208, as shown in Fig. 4. It-will now be seen, that the respective compartment of the box 4 or 5 closed with the two slides 205 and 208 is at the same time thereby rendered water-tight. When in a manner to be hereinafter described, the box 4 or 5 is lowered into the extreme lower position shown in Fig. 1 on the right, the slide 205 will move out of the guides 4 4 or 4", 4, 204, 204 and can engage from above into the guides appertaining to the other compartment of the box for closing this compartment. The parts on the inner side of the box 4 in Figs. 4 and 5 are omitted from Fig. 2 for the sake of clearness. Each compartment of the box 4 or 5 is in the bottom provided with a hollow draining valve 119 (Fig. 6), which is guided in an upper extension 118 of a draining pipe 118 fastened on the lower side of the box. The pipe 118 ace-2,442

.is bent and passes along the bottom of the box to either side as is shown in Fig. 5. As one draining valve 119 is in the plane of one side of the partition 6 and the other valve 119 in the plane of the inside of the outer box wall, one draining pipe 118 is short and the other pipe 118 long. The outer ends of the two pipes 118, 118 are to be connected'with two lengths of hose (not shown) hanging down and leading to reservoirs or the like. The two draining valves 119 are rigidly connected with vertical tubes 120, which move in suitable-recesses in the box wall or partition 6, extend upward to a;

point beneath the upper edgeof the box 4 or 5 and are guided in suitable guides 213 (Fig. 4). The tubes .120 serve as overflow pipes, through which any excess .of the liquid filling the compartment can be discharged through the pipe 118 and hose. The upper extension 118 of each draining pipe 118 is just above the bottom provided with holes 118 which for the highest position of the tube 120can register with re cesses 119 of the valve 119, whereby the latter is opened, so that the liquid can be discharged from the compartment. A support 214 (Fig. 4) fastened on the upper edge of the box wall or partition carries a pin 121, on which a two-armed lever 122, 123 is mounted to-rock. The arm 123 carries a roller 123 adapted to be depressed by an arm 128 to be described later on. V The outer arm of the lever 122 is pivotally connected with the tube 120 by means of a suitable nected together by means of a crosshead 217, I

which in the middle is supported by a vertical rack 12 or 12? and (f1 thefour corners is connected with four guiding .rods 16, 16*. The four rods 16, 16 are guided in suitable guides 15, 15 on the machine base and serve for vertically uiding the crosshead 217 and therewiththe box 4, 5. The-rack 12 or 12 meshes with a gear wheel 13 and is prevented from lateral motion by meansof a guiding roller 14. The shaft of the gear wheel 13 turns in the frame and carries fast jeson it a pinion 83 which meshes with atoothed segment 82 at the left'in Fig. 2 and with-a toothed segment 78 for' the right.

The segment 78 has an arm 77 carrying a roller (Fig. 1), which is adapted to rollon the periphery of either of two double cams 74 and fastened on the main shaft 21. The segment 78 is by its shaft' 76 rigidly connected with an opposite toothed segment 7 9, which meshes with another like toothed segment 81 fastened on the shaft of the other segment 82. It will be seen, that in this manner the two boxes 4, 4 or 5, 5 are simultaneously raised and lowered from the double cam 74 or 74 On the main shaft 21 are fastened two cam disks 22, 22, each of which is adapted to periodically shift an arm 20 from one position to the other and vice versa. The shaft 17 of each arm 20 carries atboth ends two of the already mentioned forked arms 18 (in Fig. 2 only the left one is shown for the sake of clearness). It will be now understood, that on two opposite boxes 4, 4 or 5 reaching their lowest position, in which .their pin extensions 19 19 engage in the two forked arms 18 andon the latter being rocked, the two boxes onbothsides will be simultaneously and horizontally shifted from one position to the other, sothat their other compartments are beneath the rollers 2, 2*" or 3, 3 and are ready on being raised to compass these rollers.

On the 'rearend of the main shaft 21 is fastened a chain wheel 85-, which is connected by means of'an endless chain 86 with another, chain wheel 87 fast on a counter-shaft 88 parallel to 21 and mounted to turn above in the frame 1. Fastened on the countershaft 88 are six cam disks 89, 136,97, 89, 136, 97, of which any two disks denoted by the same'character of. reference are alike,

but opposite to one another.

Fastened on the frame 1 in any known manner (not shown) are six stop valves 84,

108, 112, 84,108,112 of any known construction, which are each connected on one side with a tube (not shown) leading to some source of liquid. Two valves 84, 84

are for lye, two others 108, 108 for warm' rinsingwater and the two last 112, 112 for cold rinsing water. Each lye valve 84 is connected by. me us of a tube 218 with acommon' tube, whi h in Fig. 1 is not shown as it is hidden by parts 128, 131, and is connected with two opposite bent tubes 219 on both sides of the machine. Each tube 219 passes around the upper roller 2 or 3 and terminates in a horlzontal rinsing tube 220' (Fig. 5) between the lower roller2, 3 and the upper roller 2, 3 (Fig. 2). The two rinsing valves 108, 112 in each pair are ronnectedby tubes 221, 111 with a common tube 222, which at both ends is connected with two' opposite bent tubes 223. Each tube 223 passes around the upper roller 2 or '3: and terminates in a rinsing. tube v224 similar to. 220. The two tubes 219, 223 in each pair are so bent, as to allow the upper roller 2 or 3 and the two links 72 to freely move between them in the "vertical direcfioni i I I Parallel to the counter shaft 88 a shaft 91 is mounted .to turn in the frame 1 and has fastened on it six bent levers 92,134, 225, 92, 134,225. Each lever 92 carries at the upper. end a roller adapted to strike and work withthe single cam on the cam disk 89. The horizontal arm of this lever 92 carries a weight 106 and is at its free end pivotally connected by means of links 104 (Fig. 2) with the spindle of the lye valve 84. In

' this manner the lye valve 84 can be opened 2) bymeans of a rod 130 and the inner arm 129 of the lever 128 129 It will be seen, that in this manner the two opposite arms 128, 128 are simultaneously moved upward and downward from the cam disk 136. Each cam disk 97 has on both sides "two cams which are set at a small angle from one another. The cam on the front side of thecam disk 97 is adapted to work with the roller 98 at the upper arm 99 of the bent lever 99, 100, while the horizontal arm 100 is similar to that of the lever 92 carries a weight 106 and is pivotally connected by means of a rod 226 with the spindle of the upper rinsing valve 108. The cam on the rear side of the cam disk 97 is adapted to work with the roller on the upperarm of the lever 225, while the horizontal arm of this lever is pivotally connected by means of a rod 113 with the spindle of the lower rinsing valve 112. It will be seen, that during the slow rotation of the shaft 88 the cam disk 97 will first by means of its cam on the front open the upper rinsing valve 108 for warm water and shortly afterward by means of the cam on. the rear side open thelower rinsing valve 112 for cold water.

. The yarn mercerizing machine operates as follows: It is to be noted, that both the main shaft 21 andthe counter-shaft 88 make the same'number of revolutions in an hour. and

that each process for simultaneously treating two yarns 140 on both sides of the machine' (Fig. 2) is to be accomplished at the end of every complete revolution of the main shaft 21. For the sake of clearness only one box 4 on the right in Fig. 2 is now taken into consideration. At the commencement of one process the cam disk 61 occupies such a position that its cam is beneath the roller 62 and consequently has turned the levers 64 into the upper extreme position, so that by means of the two links 65. the long I oeaeaa arm 67 with the weight 69 has been turned upward and the short arm 68 has been turned downward, in other Words, the upper roller 2 now occupies its lowest position shown at A in Fig. 3. At the same time the roller 38 on the arm 40 is in the vertical central plane of the cam disk 39 and both belts passing through the two belt forks 41, 42 are on the two loose pulleys 45, 46, so that thefast pulley 43 with the shaft 32 and the parts thereby driven stop and the two rollers 2, 2 do not turn. It must be remembered, that the main shaft 21 turns slowly, so that it takes a certain time for the lever 40 to pass from one extreme position to the other one and vice versa. lVhen during this slow motion the roller 38 reaches its middle position, it is at this moment, that the parts 43, 32 2, 2 stop for a little while. At the same time the'roller on the arm 77 (Fig. 2) bears against one of the two opposite portions of the cam disk 74 having the smallest radius, so that the box 4 occupies its lowest position shown at A in Fig. 3. Its pin 19 engages in the forked The operator now places a fresh hank of yarn 140 on the upper roller 2*, wh ch hank now hangs down, so that its lower doubled end is beneath the lower roller 2 at a distance therefrom, as is clearly shown on the right in Fig. 1. The main shaft 21 is assumed to turn in the direction of the arrow 227 in Fig. 2, when one cam of the cam disk 74 in themanner described above slowly raises the box 4, at the same time one belt is shifted from its loose pulley 45 or 46 to the fast pulley 43, which therefore causes the two rollers 2, 2* to rotate, and the cam of the cam disk 61 leaves the roller 62, which with the two levers 64 sinks comparatively rapidly owing to the straight portion of the cam disk 61. Thereby the upper roller 2 is moved upward, so that it powerfully stretches the yarn hank 140. 7 On the box 4 reaching its upper extreme position (D in Fig. 3) the cam disk 89 will by its cam open the lye valve 84, so that the lye commences to'fill the left compartment of the box 4, while the yarn hank 140 constantly moves, the squeezing roller 23 being of course also rotated by itscontact with the yarn. Where I so preferred, the perforated tube 220 may be omitted, so as to enable the lye to fill" the box more rapidly. When the left compartment of the box has been filled, the lye valve 84 is again closed. The yarn hank 140 continues its motion in one direction, while the squeezing roller 23 energetically forces the lye into the core of the yarns, so that the latter may become thoroughly lmpregnated. Then the two belt forks 41, 42 shift to the other extreme position for reversing the direction of the yarn hank 140, which then moves in the opposite direction, so as to more impregnate the yarn with'lye. At a conarm 18 as is shown.

ost/nae 'venient moment the cam disk 136 by its one "so that the squeezing roller 23 squeezes the lye out of .the yarn hank. On the left compartment having been emptied, the draining valve 119' is again closed and the box 4 is lowered. On the box reachingits lowest po-- sition (A- in Fig. 3) and its pin 19 again engaging the forked arm 18, the cam disk 22 will shift the arm 20 and therewith the forked arm 18 to the other extreme position, which means, that the box 4 is shifted from theright position (A) to-the left position (C). Thereupon the box-4: is again raised, so that its right' compartment isready .to compass the two .rollers 2', 2 and the yarn hank 140. On the boxhaving reached the uppfrmostposition "(B in Fig. 3), the cam dis 97 operates for rinsing the yarn hank firstwith'w'arm water and then with cold water. The direction of the yarn hank 140 is again reversed. When the hank has been sufficiently rinsed, the cam disk 136 by its other cam opens the draining valve 119, so

. that the-rinsing water is discharged from the .right compartment. On the right compartment having been emptied, the box 4 descends (C in Fig. 3) and the arm 67 with the weight 69 is raised for lowering the uper roller 2, whereby the treated yarn hank is released, so that it can be exchanged for a fresh one. set at an angle of 180 from one another, it follows, that the operator can take off the two treated yarn hanks from the two pairs of rollers 2,2 in the same vertical common plane and exchange them for two fresh ones, before he in a'similar manner attends to the two pairs of rollers 3, 3 in the other common plane parallel to the first one.

.The yarn mercerizing -mach1ne can be varied in many respects without departing from the spirit of my invention. For example the machine may be provided on .each side with. four boxes as shown atFig. 3. In this case the two cam disks 61, 6l 'for two pairs of rollers 2, 2, ,3, 3 on each side of the machine, that is for A and B may be 'set at. an angle of 180 from 'one'ano'ther as before and also the two cam disks 61, 61*

for C and D, but the cam disks for B maybe set at an angle of 90 from the cam disks for G.- Then the driving power can be better utilized and the operator is enabled to double his work. I

Iclaim: .1. -Ina yarn mercerizing machine, the

combination with aframe, of a shaft hori-, zontal in said frame, means for driving said,

' shaft, pairs of rollers in said frame in ver-' tic'al planes at right angles to said shaft,

means for 7 driving said pairs of rollers,

As the two cam disks 61, 61 are boxes vertically guided in said frame in the g said frame for packing the pair of rollers engaging through the lateral opening of any box when in the highest position whereby the box is closed.

. 2. In a .yarn mercerizing machine, the combination with a frame, of a main shaft horizontal in said frame, means for driving said main shaft, a counter-shaft parallel to said main shaft in said frame, means. for driving said counter-shaft at the same speed as said main shaft, pairs of rollers in said frame in vertical planes at right angles to said main shaft, means. for driving said pairs of rollers, boxes vertically guided in said frame in the planes of said pairs of rollers and having each in the inner wall .an opening, means operated from said main shaft for periodically raising and lowering said boxes severally and holding-them for a while in the highest or lowest position, said pairs of rollers being adapted to engage in said boxes through the lateral openings, means on said frame for packing said pairs of rollers and closing eachbox when in the highest position, draining valves in said boxes, stop valves, tubes connected with said stop valves and adapted. to engage with said pairs of rollers in said boxes -whenin the highest position, means opereriodi ated from said counter-shaft for p cally and severally opening and closmg said step valves, and means operated from said counter-shaft for periodically and severally opening-and. closing said draining valves in the highest position-of said boxes.

3. In a yarn 'mercerizing machine, the

combination with a frame, of a main shaft horizontal in said frame, means for driving said main shaft, a counter-shaft parallel to said main shaft in said frame, 'means for driving said counter-shaft at the same speed assaidmain shaft, pairs of rollers in said frame invertical planes at right angles'to said main shaft, means for driving and reversing said pairs of rollers, means operatedfrom said main shaft for periodically effecting-the reversal of said pairs of rollers,

boxes vertically guided in said frame .in the planes of'said pairs of rollers andwhaving each in the inner wall an'opening, means op- I erated from said main shaft for periodically raising and loweringsaid boxes severally and holding them for. awhile in-the highest 61'- lowestposition, said pairs of rollers be- .ing adapted toengage insaid boxesthrough the lateral openings, means ,on said frame for packing said pairs of rollers and'cl'osing each box when in the'highest position, draining valves in said boxes, stop valves, tubes connected with said stop valves and adapted to engage with said pairs of rollers in said boxes when in the highest position, means operated from said counter-shaft for periodically and severally opening and closing said stop valves, and means operated from said counter-shaft for periodically and severally opening and closing said draining valves in the highest position of said boxes.

4. In a yarn mercerizing machine, the combination with a frame, of a main shaft horizontal in said frame, means for driving said main shaft, a counter-shaft parallel to said main shaft in said frame, means for driving said counter-shaft at the same speed as said main shaft, pairs of rollers in said frame in vertical planes at right angles to said main shaft, means for driving and re-- versing said pairs of rollers, means operated from said main shaft for periodically effecting the reversal of said pairs of rollers, tables vertically guided in said frame in the planes of said pairs of rollers, rails on said tables parallel to said main shaft, means operated from said main shaft for periodically raising and lowering said tables severally and holding them for a while in the highest or lowest position, wheeled boxes movable on said rails and each divided by a partition into two compartments adapted to alternately compass one of said pairs of rollers, the inner wall of each of said wheeled boxes having two openings for permitting the pair of rollers to engage in either com partment, means on said frame for packing. said pairs of rollers and closing either commerges either direction each of said wheeled boxes on said rails when inthe lowest position,

draining valves in said wheeled boxes, stop valves, tubes connected with said stop valves and adapted to engage with said pairs of rollers in either compartment of said wheeled boxes when in the highest position, means operated from said counter-shaft for periodically and severally opening and closing said stop valves, and means operated from said counter-shaft for eriodically and severally opening and c osing said draining valves in the highest position of any of said wheeled boxes.

5. In a yarn meroerizin machine, the combination with a frame, 0 two horizontal rollers in the same vertical plane mounted to turn in said frame and projecting therefrom on one side, a box vertically'guided in said frame and adapted to compass in its highest position said two rollers, said box having in the inner wall an opening for permitting said twovrollers to engage in it, means for periodically raising and lowering "said box, means on said frame for packing said pairs of rollers and closing said .box when in the highest position, and a squeezing roller mounted to turn in said box beneath the opening and adapted to be pressed against the lower of said two rollers in the highest position of said box.

' l PAUL HAHN. Witnesses:

Rononr FELDM OSCAR DEPNER. 

